Henry St John
Henry St. John may refer to:
- Henry St John , MP for Stockbridge, 1589 and 1593
- Sir Henry St John , English politician
- Sir Henry St John, 1st Viscount St John, father of the 1st Viscount Bolingbroke and MP for Wootton Bassett, 1679–1700
- Henry St John, 1st Viscount Bolingbroke, English philosopher and MP for Wootton Bassett, 1701–1708
- Sir Henry St John, 2nd Baronet, British politician
- Henry St John , MP for Wootton Bassett, 1761 and 1802
- Henry St John, 13th Baron St John of Bletso, British peer
- Henry St. John , U.S. Representative from Ohio
- Henry St John, 4th Viscount Bolingbroke, 5th Viscount St John
- Henry St John, 5th Viscount Bolingbroke, 6th Viscount St John
- Henry St John , British admiral
- Henry St John, 18th Baron St John of Bletso, English peer